What is the unknown of 8/10+=97/100

With number 11 ( show how you got the answer)

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

If angle ase measures 168 degrees, find the measure of angle dse. the figure mag not be drawn to scale